1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ca153351ec71f2a766f5db387b688368324a4562e5daee9e26db1e1de01a95. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c417e3c5-08a5-4683-98d1-b4aaa018001f.json and https://artists.proofprofile.net/proofs/artist/c417e3c5-08a5-4683-98d1-b4aaa018001f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1856ad46339ef89eea534e67b05740e8931f794e4dc315c131f5fdbe14f5e88f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78462e443d955e529394e9c3b201fe4255dc80b88bb0f5bcdfbc91876a01306. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3462f7ecf6d23a38dcadd60e4bf3961381d96708d4dff46dac31f114a65a6169. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d8654de6004ec7f49e19363a1a02624834320b7d3a68fe79cadd8d1fed4ac4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd668e695d35f6b02de49607341bea4cc1c25f8ea38ac4301bed0fa7674a147f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb942c0a7b012737a342c4c19a827bab413b0050e092637dd13f69896bc8e46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf68c373d73075d771fa0d90d8467ca3bd70efda10d026d87f76d9fad4095bca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce89179f8dd4626cf4841243e8506b27313add5d053323a6d4b48266d5f4386b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a92c15aea13de28ee4d964b7fc2263b68501dcff7a563e976e2f636d7db062. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce34e8056cf3a02758e4b6bce0ee4f3c4145d19bc7b391c681d8941e57f2e500. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e44fe7d7f275dbd4b948373d2bc2b37950a9fb39fe89971a312c3e21b52f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca94ad9fedab57223a16caeb10e3b2a514d7969270ca1861c5da760e2846d408. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aed149def168ac84320b21a3fed88a63f08c3ab0df6429a35eeb6d5e3438a2d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081441129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5e8ca9e7bcec4b04f7efaa4afaaec067b692eb2745d0e78b5f3b8ccf8b94fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5151602514.
Pequeño torbellino (pequeña versión) [feat. Mäbu]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51151dd08dfa964a0f13f1268ab575ddfa319d894f29f9baea61c708a068e455. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5151802444.
El mejor de tus errores (feat. Alice Wonder)
Solo los amantes sobreviven (feat. Fredi Leis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c31197ad71f3f00dc931233acc0f765e63db5ab081d891dcbb5fd3c7738136. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES1152001572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205424ded959d0251d0f8198385369b5c9ed79030a0ff949305310f0f379f247. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152001076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d3da498514fddd2c4acb581174f50cda3d316db17634c3bf1afd7af9b60882. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152001248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaefa393d04568542c73ec5304772aeb3de423667ee6b760b714dfffaab43b22. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152001250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580535efba7948ed35b17978decb889ece8e2eee95ea67f1b4e3f554c69b9e55. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152001242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f57f7f3bc856fe3e9667544c1fcef3c208d894b4aafa3a649e2ab6be22931d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152001251.
El gobierno de las canciones (feat. Ciudad Jara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c140429e1a378e5a628cacf1effbf349ecf5ee91ac74c2c4d5d595e59f38c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152001252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13462a5c5f9f08c229f22da709af67903614ce385563ecc4732e5e0eb6c475e4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b2b74a04417e072b0cb54fb2bd446043582434fed0f71f8b58b5070750da70. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c7d2d14bc3e08187e9e2678addebd25cc84bc03e94505bb255e7e3095c9ef4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34b367b30eb3dd24d9439c1578a41f42bd109214b0fa0c01ed76e64a2442860. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201600.
Castigos amables (feat. Beatriz Fernández)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6574cc446ee967abc55f1f3c1714cb4914d679474e6cd5e64d757ee550902c3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e58ade1280730fdbbbed1c9d6c014c033f16d17308b7ca1f44b8c68b57fca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7bf555a1b71c917e27452210509f504776d0b2f8b5f2726246c2f1290f5925. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152101218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424b1df6105197a1e7a6a85370b06b9c9aeb8719e08f4be142c3f066cf037358. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f30a229412ca1e2682947fca37cb667db1ca15cf797b2145f1a02544315267. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843b82e39915037e5b62dd487babe7d59bfc5fc70fccdca377fa3ee7188894b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c9aef175317f7318630938567b50a7fbf12a8f5be00a9a4ce9ba98306097ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152200452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d138708bb208e64531dfac8329a322c2bad00cd08cd0cce05e318ec01b738f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152201715.
Matemática de la carne (En directo Wizink)
Intro + La patria de los ausentes - En directo Wizink
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fde0ff8367a58a0285b215118416dddca2d1de471dcf230f7d37be0669bba3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5152400796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21e8757ec3bfaa520b739f18d063d7b4ea406da0a26bb2db35e143c4abb9b17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6081741109.